package algorithm.test;

public class Bubble {

    public static void sort(Comparable[] a){
        for (int i=a.length-1;i>=0;i--){
            for (int j=0;j<i;j++){
                if (greater(a[j],a[j+1])){
                    exch(a,j,j+1);
                }
            }

        }
    }

    public static boolean greater(Comparable v,Comparable w){
        return v.compareTo(w)>0;
        //v是否大于w
    }

    private static void exch(Comparable[] a,int i,int j){
        Comparable t=a[i];
        a[i]=a[j];
        a[j]=t;
    }
}
